RMRSVGC Series Hybrid Static Var Dynamic Compensation Device

Product Description

The RMRSVGC low-voltage hybrid active dynamic reactive power compensation device is installed in low-voltage distribution networks to improve voltage quality, enhance reactive power compensation management, and ensure stable and efficient power supply performance. It is an upgraded and extended solution based on traditional automatic low-voltage reactive power compensation systems. Through the integration of active and passive technologies, RMRSVGC provides faster response, higher accuracy, and better adaptability to modern electrical loads.

Product Features

■ Fast Dynamic Response

The system combines SVG modules and LC components to deliver ultra-fast compensation.

• SVG modules provide rapid dynamic reactive power regulation.
• LC branches offer high-capacity compensation with minimal losses.
• The hybrid structure ensures smooth transitions, avoiding under-compensation and over-compensation during sudden load fluctuations.

■ Intelligent Control & Modular Design

• Equipped with ICMS intelligent control and monitoring platform.
• Real-time display of power parameters, waveform data, compensation ratio, and operating status.
• Supports multiple working modes and flexible configuration of SVG + LC modules.
• Each branch is monitored independently to ensure stability and reliability.

■ High Compensation Accuracy

• Compensation accuracy ≥ 97%.
• Power factor adjustable up to 0.99.
• Effectively reduces system voltage fluctuations and reactive power losses.
• Minimizes harmonics within the LC compensation components, preventing switching surge issues common in traditional systems.

■ Excellent Harmonic Suppression

• SVG module provides fast harmonic compensation with a response time <10ms.
• Able to suppress 2nd–13th order harmonics depending on system requirements.

■ Flexible Capacity Configuration

• Compensation range adjustable from −1 to +1 (relative per-unit compensation).
• SVG and LC components can be combined in various ratios to match different load characteristics.
• Typical configurations can use 30kvar–300kvar capacity modules.

■ Safe and Reliable Operation

• Built-in protections: overvoltage, undervoltage, overload, overcurrent, short circuit, overheating, unbalanced current, THD alarms, and phase-loss protection.
• Automatic fault diagnosis, automatic switching, and automatic recovery.

■ Stable and Efficient Performance

• Improves voltage quality and network stability.
• Reduces transformer and cable losses caused by low power factor or load imbalance.
• Ideal for applications with strong impact loads, variable loads, and nonlinear equipment.

Working Principle

The RMRSVGC hybrid compensation system consists of:

• ICMS intelligent controller
• SVG active compensation module
• LC passive compensation module

Operation Logic:

• SVG provides fast response to dynamic reactive power fluctuations.
• LC module provides large-capacity steady-state compensation.
• The ICMS controller continuously monitors load conditions and coordinates the real-time switching of SVG and LC modules.
• This hybrid approach eliminates over-compensation and under-compensation problems common in traditional TSC/TCR systems.
• The device maintains stable power factor and suppresses harmonic pollution.

Compensation Performance Example (300kvar Capacity)

Technical Specifications

Input

• Rated Voltage: 380V (voltage fluctuation range −40% to +20%)
• Rated Frequency: 50Hz ± 2Hz

Compensation

• Compensation Capacity: 50kvar / 75kvar / 100kvar / 200kvar (expandable)
• Compensation Accuracy: ≥97%
• CT Requirements: 3×CT; accuracy ≥0.5 class; secondary current 5A
• Working Frequency: ~20kHz
• Neutral Line Harmonic Handling: 3× fundamental current

Response Capability

• Dynamic Response Time: <40μs
• Full Response Time: <10ms

Protection Functions

• Overvoltage, undervoltage, overcurrent, overload, short circuit
• Overheat protection (IGBT temperature monitoring)
• Phase-loss monitoring
• THD alarm
• Fan failure protection

Data Monitoring & Recording

• Real-time monitoring of currents, voltages, power factor, THD
• Load waveform and three-phase current & voltage curves
• IGBT temperature and other environmental data
• Historical event logs

Communication

• Interface: RS485 / LAN
• Protocol: Modbus

Environmental Conditions

• Operating Temperature: −10°C to +45°C
• Humidity: <95% (non-condensing)
• Altitude: <2000m

Installation

• Installation Type: Wall-mounted, floor-mounted, integrated cabinet
• Cooling: Intelligent air cooling
• Protection Level: IP20

Recommended Applications

RMRSVGC hybrid systems are ideal for scenarios requiring fast, accurate, and large-capacity reactive power compensation:

• Industrial equipment with impact loads (cranes, elevators, injection machines)
• Oil fields and drilling platforms
• Large motors and variable load systems
• Nonlinear loads causing severe harmonic distortion
• Distribution networks requiring voltage stabilization
• Renewable energy systems
• Precision manufacturing facilities
• HVAC systems, pumps, compressors